Input of continuous anthropogenic sound (HOLAS 2)
Short description
This layer is based on data from the BIAS project representing ambient underwater noise, modelled into a 0.5 km x 0.5 km grid, and representing sound pressure levels at 1/3 octave bands of 125 Hz exceeded at least 5% of the time. Measured and modelled acoustic data is provided as Sound Pressure Level (SPL). The time period for the data is annual values for year 2014. The selected depth interval is 0 m – bottom to represent the ambient underwater noise in the whole water column. The data were normalized setting level 0 at 92 db re 1µPa and level 1 at 127 db re 1µPa.
Point of contact
HELCOM Secretariat
data@helcom.fi
Spatial extent
['7.818737', '33.903834', '52.502121', '66.484464']
Type
dataset
Metadata information
Identifier
Keywords
Oceanographic geographical features ; GEMET - INSPIRE themes, version 1.0 ;

noise pollution ; environmental impact ; GEMET ;

MADS ; HOLAS2 ;

Resource provider(s)
HELCOM Secretariat
data@helcom.fi

Lineage
Data source: Baltic Sea Information on the Acoustic Soundscape (BIAS) project, BIAS soundscape planning tool. Data quality: The whole dataset is obtained from one source and is based on best available data. Attribute information: Pressure value Spatial coverage: Entire Baltic Sea. Spatial resolution: Original data as 1 km x 1 km grid